Romance wrecker Heather Mills

The former model, who received £24.3 million in their bitter divorce battle, reportedly wants to phone US heiress Nancy Shevell to warn her off a relationship with the musician.

A source told Britain's Daily Mirror newspaper: "Heather is threatening to call and explain the dangers of dating a Beatle.

"She had hell with the public hating her and reckons Nancy could too. Heather genuinely thinks she's doing Nancy a good turn."

Heather is believed to have felt "deceived andbetrayed" after photographs were released of Paul and Nancy enjoying a romantic stroll along a beach in a private Caribbean resort.

Yesterday (01.04.08), Nancy was seen rubbing suncream onto Paul's back as the pair relaxed on a boat. The musician was also photographed diving into the water as Nancy watched on.

Paul, 65, and Nancy, 47, are staying in a £6,000-a-night villa at the exclusive Jumby Bay resort, two miles off Antigua.

Heather is also said to be terrified Paul is planning to have a baby with Nancy and she is worried he will spend less time with their four-year-old daughter Beatrice.

The source added: "She went ballistic when she found out. She is also terrified they're planning a baby - even though Nancy's not far off 50 - and thinks another child will detract from Beatrice."

Meanwhile, Heather is considering launching a new legal battle against Paul.

The 40-year-old vegan is ready to return to court to get the gagging order on their case lifted. Heather wants the transcript of their divorce to be made public to show Paul treated her badly her during their four-year marriage.

Her lawyer David Rosen said: "She just wants the public to have the facts. She wants people to know she was a good mother and wife. Perhaps it would be better for the public to see everything."

Rosen also dismissed claims Heather was unhappy with her divorce settlement, despite rumours she had demanded £125 million.

He said: "She wasn't disappointed, she was very happy. It was a good figure. She would have accepted a lesser sum."